The Grundfos SQFlex solar water pumps are versatile and can be powered by various sources, including solar panels, wind turbines, inverters, generators, batteries, or the utility grid. This flexibility makes them ideal for a wide range of applications. The pump can operate on power sources ranging from 30-300 VDC and 90-240 VAC, with optimal efficiency at voltages over 100 VDC.

Key Features

• Power Source Flexibility: Operate the pump using solar or wind power, or connect it to an inverter, generator, battery, or utility grid.
• Wide Voltage Range: Compatible with power sources from 30-300 VDC and 90-240 VAC.
• High Efficiency: Best performance at voltages over 100 VDC.
• Compact Design: Models SQFlex 3 and 6 fit into a 3" well.
• Variety of Models: Seven pump models available, delivering from 2 GPM at 600 feet to 65 GPM at 20 feet of head with a 1 kW solar array or less.
• Built-In Protections: Includes protection from dry-running, overload, and overheating.
• Warranty: Comes with a 2-year warranty, with an optional 5-year extended warranty available.

Pump Types

• Helical Rotor Pumps: Models 3, 6, and 11 are designed for high-head applications.
• Centrifugal Pumps: Ideal for low-head applications, ensuring efficient performance for various needs.

Optional Controls

• CU200 Interface Box:
  • Monitors pump operating conditions and displays diagnostics.
  • Indicates faults, dry-running, operating status, power consumption, and water level.
  • Interfaces with a water level switch to turn off the pump when a tank is full.
• IO100 Control Box:
  • Simple interface with cable terminations and a manual on/off switch.
  • Allows safe disconnection of the high voltage array when working on the pump.
• IO101 AC Backup Interface:
  • Automatically switches between solar power and AC backup from a generator, utility connection, or inverter.
  • Ensures continuous operation by reconnecting to the solar array when AC power is no longer available.
• IO102 Wind and PV Interface:
  • Designed for systems powered solely by wind turbines or a combination of wind and solar power.

Additional Information

• Multiple Control Compatibility: You can use several control units simultaneously if you need more features.
• GFCI Compatibility: The SQFlex pumps will not function with a GFCI (Ground Fault Circuit Interrupter) in the supply circuit and should not be used where a GFCI is required.
• Pump Types and Weights: The 3 SQF, 6 SQF, and 11 SQF are helical rotor pumps, while other models are centrifugal. All SQF pumps weigh between 17 to 23 pounds